We have no spare money.

We have plenty of time to spare.

As long as a bear is relatively inactive, and is not exposed to wind, it does not burn excessive energy in cold weather.

He did not know what to do with the extra food.

He didn't know what to do with the extra food.

He coaxed extra money from his mother.

The body converts extra calories into fat.

The result of this experiment is obscured by the extra variables added in the formula.

We'll need an extra ten dollars.

I looked at my bank account book, and happily discovered that I had an extra $50!

We'll need an extra ten dollars.

We have no spare money.

You must cut down on extra expenses in order to live within your means.

My wife's part-time job brings in a little extra money.

Do you have an extra English dictionary by any chance?

The extra room proved very useful when we had visitors.

That job brings him in an extra 60,000 yen a month.

These ungrammatical sentences resulted from the application of the additional rule F.

I always need an extra blanket in the wintertime.

We stayed an extra two weeks in Paris; and we spent it seeing the sights.